refactory: added UI removed from core plugin.

[phpeclipse.git] / net.sourceforge.phpeclipse.ui / src / net / sourceforge / phpdt / internal / ui / text / template / IdentifierEngine.java

diff --git a/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/template/IdentifierEngine.java b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/template/IdentifierEngine.java
new file mode 100644 (file)
index 0000000..58d82e9
--- /dev/null
+++ b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/template/IdentifierEngine.java
@@ -0,0 +1,122 @@
+/*
+ * (c) Copyright IBM Corp. 2000, 2001.
+ * All Rights Reserved.
+ */
+package net.sourceforge.phpdt.internal.ui.text.template;
+
+import java.util.ArrayList;
+
+import net.sourceforge.phpdt.core.ICompilationUnit;
+import net.sourceforge.phpdt.internal.corext.template.php.CompilationUnitContextType;
+import net.sourceforge.phpdt.internal.corext.template.php.JavaContext;
+import net.sourceforge.phpdt.internal.corext.template.php.JavaContextType;
+import net.sourceforge.phpdt.internal.ui.PHPUiImages;
+import net.sourceforge.phpdt.internal.ui.text.java.IPHPCompletionProposal;
+import net.sourceforge.phpeclipse.ui.WebUI;
+//import net.sourceforge.phpeclipse.PHPeclipsePlugin;
+
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.ITextViewer;
+import org.eclipse.jface.text.Region;
+import org.eclipse.swt.graphics.Point;
+
+public class IdentifierEngine {
+
+       /** The context type. */
+       private JavaContextType fContextType;
+
+       /** The result proposals. */
+       private ArrayList fProposals = new ArrayList();
+
+       /**
+        * Creates the template engine for a particular context type. See
+        * <code>TemplateContext</code> for supported context types.
+        */
+       public IdentifierEngine(JavaContextType contextType) {
+               // Assert.isNotNull(contextType);
+               fContextType = contextType;
+       }
+
+       /**
+        * Empties the collector.
+        * 
+        * @param viewer
+        *            the text viewer
+        * @param unit
+        *            the compilation unit (may be <code>null</code>)
+        */
+       public void reset() {
+               fProposals.clear();
+       }
+
+       /**
+        * Returns the array of matching templates.
+        */
+       public IPHPCompletionProposal[] getResults() {
+               return (IPHPCompletionProposal[]) fProposals
+                               .toArray(new IPHPCompletionProposal[fProposals.size()]);
+       }
+
+       /**
+        * Inspects the context of the compilation unit around
+        * <code>completionPosition</code> and feeds the collector with proposals.
+        * 
+        * @param viewer
+        *            the text viewer
+        * @param completionPosition
+        *            the context position in the document of the text viewer
+        * @param compilationUnit
+        *            the compilation unit (may be <code>null</code>)
+        */
+       public void complete(ITextViewer viewer, int completionPosition,
+                       Object[] identifiers, ICompilationUnit compilationUnit)
+       // hrows JavaModelException
+       {
+               IDocument document = viewer.getDocument();
+
+               if (!(fContextType instanceof CompilationUnitContextType))
+                       return;
+
+               Point selection = viewer.getSelectedRange();
+               // remember selected text
+               String selectedText = null;
+               if (selection.y != 0) {
+                       try {
+                               selectedText = document.get(selection.x, selection.y);
+                       } catch (BadLocationException e) {
+                       }
+               }
+
+               // ((CompilationUnitContextType)
+               // fContextType).setContextParameters(document, completionPosition,
+               // selection.y); //mpilationUnit);
+
+               // JavaContext context = (JavaContext) fContextType.createContext();
+               JavaContext context = (JavaContext) fContextType.createContext(
+                               document, completionPosition, selection.y, compilationUnit);
+               context.setVariable("selection", selectedText); //$NON-NLS-1$
+
+               int start = context.getStart();
+               int end = context.getEnd();
+               IRegion region = new Region(start, end - start);
+
+               // Template[] templates= Templates.getInstance().getTemplates();
+               String identifier = null;
+               int maxProposals = WebUI.MAX_PROPOSALS;
+
+               for (int i = 0; i != identifiers.length; i++) {
+                       identifier = (String) identifiers[i];
+                       if (context.canEvaluate(identifier)) {
+                               if (maxProposals-- < 0) {
+                                       return;
+                               }
+                               fProposals.add(new IdentifierProposal(identifier, context,
+                                               region, viewer, PHPUiImages.get(PHPUiImages.IMG_FUN),
+                                               PHPUiImages.get(PHPUiImages.IMG_VAR)));
+                       }
+               }
+       }
+
+}